DataVXAdvanced MaterialsPaper
journal article·2024-01

High‐Performing and Capacitive‐Matched Triboelectric Implants Driven by Ultrasound

Young‐Jun Kim, Jiho Lee, Joon‐Ha Hwang, Youngwook Chung, Byung‐Joon Park, Junho Kim, So‐Hee Kim, Junseung Mun, Hong‐Joon Yoon, Sung‐Min Park, Sang‐Woo Kim

Advanced Materials· Volume 36· Issue 2
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Source abstract

Abstract

Abstract In implantable bioelectronics, which aim for semipermanent use of devices, biosafe energy sources and packaging materials to protect devices are essential elements. However, research so far has been conducted in a direction where they cannot coexist. Here, the development of capacitance‐matched triboelectric implants driven is reported by ultrasound under 500 mW cm−2 safe intensity and realize a battery‐free, miniatured, and wireless neurostimulator with full titanium (Ti) packaging. The triboelectric implant with high dielectric composite, which has ultralow output impedance, can efficiently deliver sufficient power to generate the stimulation pulse without an energy‐storing battery, despite ultrasound attenuation due to the Ti, and has the highest energy transmission efficiency among those reported so far. In vivo study using a rat model demonstrated that the proposed device system is an effective solution for relieving urinary symptoms. These achievements provide a significant step toward permanently implantable devices for controlling human organs and treating various diseases.
Source: crossref · Quality: baseline

Research context

Energy storageBiomaterialsComposites

OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Neuroscience and Neural Engineering · Wireless Power Transfer Systems

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Advanced Materials Science and Engineering Sungkyunkwan University (SKKU) Suwon 16419 Republic of Korea

Department of Convergence IT Engineering Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea

Research and Development Center Energymining Co., Ltd. Suwon 16226 Republic of Korea

Department of Materials Science and Engineering Yonsei University Seoul 03722 Republic of Korea

School of Interdisciplinary Bioscience and Bioengineering Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea

Department of Electronic Engineering Gachon University Seongnam 13120 Republic of Korea

Department of Electrical Engineering Department of Mechanical Engineering Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea

Center for Human‐Oriented Triboelectric Energy Harvesting Yonsei University Seoul 03722 Republic of Korea

Funding

National Research Foundation of Korea

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